gcc/config/i386/openbsd.h

   1 /* Configuration for an OpenBSD i386 target.
   2    Copyright (C) 1999, 2000, 2002, 2004 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  19 Boston, MA 02110-1301, USA.  */
  20
  21
  22 #define TARGET_VERSION fprintf (stderr, " (OpenBSD/i386)");
  23
  24 /* This goes away when the math-emulator is fixed */
  25 #undef TARGET_SUBTARGET_DEFAULT
  26 #define TARGET_SUBTARGET_DEFAULT \
  27   (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_NO_FANCY_MATH_387)
  28
  29 #define TARGET_OS_CPP_BUILTINS()                \
  30   do                                            \
  31     {                                           \
  32         builtin_define ("__unix__");            \
  33         builtin_define ("__OpenBSD__");         \
  34         builtin_assert ("system=unix");         \
  35         builtin_assert ("system=bsd");          \
  36         builtin_assert ("system=OpenBSD");      \
  37     }                                           \
  38   while (0)
  39
  40 /* Layout of source language data types.  */
  41
  42 /* This must agree with <machine/ansi.h> */
  43 #undef SIZE_TYPE
  44 #define SIZE_TYPE "unsigned int"
  45
  46 #undef PTRDIFF_TYPE
  47 #define PTRDIFF_TYPE "int"
  48
  49 #undef WCHAR_TYPE
  50 #define WCHAR_TYPE "int"
  51
  52 #undef WCHAR_TYPE_SIZE
  53 #define WCHAR_TYPE_SIZE 32
  54
  55 /* Assembler format: overall framework.  */
  56
  57 #undef ASM_APP_ON
  58 #define ASM_APP_ON "#APP\n"
  59
  60 #undef ASM_APP_OFF
  61 #define ASM_APP_OFF "#NO_APP\n"
  62
  63 /* Stack & calling: aggregate returns.  */
  64
  65 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  66    we want to retain compatibility with older gcc versions.  */
  67 #define DEFAULT_PCC_STRUCT_RETURN 0
  68
  69 /* Assembler format: alignment output.  */
  70
  71 /* Kludgy test: when gas is upgraded, it will have p2align, and no problems
  72    with nops.  */
  73 #ifndef HAVE_GAS_MAX_SKIP_P2ALIGN
  74 /* i386 OpenBSD still uses an older gas that doesn't insert nops by default
  75    when the .align directive demands to insert extra space in the text
  76    segment.  */
  77 #undef ASM_OUTPUT_ALIGN
  78 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
  79   if ((LOG)!=0) fprintf ((FILE), "\t.align %d,0x90\n", (LOG))
  80 #endif
  81
  82 /* Stack & calling: profiling.  */
  83
  84 /* OpenBSD's profiler recovers all information from the stack pointer.
  85    The icky part is not here, but in machine/profile.h.  */
  86 #undef FUNCTION_PROFILER
  87 #define FUNCTION_PROFILER(FILE, LABELNO)  \
  88   fputs (flag_pic ? "\tcall mcount@PLT\n": "\tcall mcount\n", FILE);
  89
  90 /* Assembler format: exception region output.  */
  91
  92 /* All configurations that don't use elf must be explicit about not using
  93    dwarf unwind information.  */
  94 #define DWARF2_UNWIND_INFO 0
  95
  96 #undef ASM_PREFERRED_EH_DATA_FORMAT
  97
  98 #undef ASM_COMMENT_START
  99 #define ASM_COMMENT_START ";#"
 100
 101 /* OpenBSD gas currently does not support quad, so do not use it.  */
 102 #undef ASM_QUAD